GalaxyLink's live ID-validation endpoint only accepts a game's GLOBAL category (e.g. FREEFIRE_GLOBAL), not the region-specific topup category you order from — and the account region it returns needs comparing against which regions are real for each topup category. Both facts have to be confirmed by testing, not guessed, so a category with no rule here just shows "not configured" (not red) until you fill it in below.

Pick the GLOBAL game first — the one GalaxyLink's own validation panel actually accepts. The second dropdown then narrows to categories whose name matches that game, so you can pick the specific region/topup category this rule is for.